The Aerogel is the world' s lightest solid and has a strength of up to 4,000 times its own weight according to Dunlop. The three-dimensional nanometer-sized molecular network delivers an unmatched strength to weight ratio for enhanced stiffness and increased power. Combined with M-Fil (muti-filament) technology across the hitting zone to ' soften' ball impact, Aerogel frames deliver the perfect balance between power and control. This racket is for the player with fast stroke speed and length that wants control with a very solid feel. Features Length 27 Headsize 95sq inch Strung Weight 337.5g Un - Strung Weight 322.5g Stiffness/ RA 63 String pattern 18x20.